Charles M. Schulz - Sonoma County in March 2024

85.7%departed on time

BTS: A flight is counted as on time if it arrived less than 15 minutes after its scheduled time. Only carriers with at least 0.5 percent of domestic scheduled passenger revenue report.

In March 2024, reporting carriers scheduled 280 domestic departures from Charles M. Schulz - Sonoma County (STS). 85.7% left less than 15 minutes late and 77.5% reached their destination on time; 0.4% were cancelled.

Nationally that month, 78.5% of flights departed on time and 78.3% arrived on time, so STS departures were 7.2 points above the national departure figure.

Flights arriving at STS that month were on time 80.0% of the time (280 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 40%, late-arriving aircraft 31% and national aviation system 22%.

On time 77.5%
Arrived 15+ minutes late 22.1%
Cancelled 0.4%
Diverted 0.0%

Every scheduled departure from STS in March 2024, judged by arrival at the destination.

March 2024 against a year earlier, the airport's year and the nation

Measure	Mar 2024	Year earlier	STS, 12 months to Jul 2026	All reported flights, Mar 2024
Departed on time	85.7%	—	80.4%	78.5%
Arrived on time	77.5%	—	78.8%	78.3%
Cancelled	0.4%	—	1.7%	0.9%
Average departure delay (late minutes only)	7.3 min	—	13.2 min	15.7 min
Scheduled departures a day	9	—	16	19,726
Scheduled departures	280	—	5,714	591,767

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OO SkyWest Airlines	262	94%	77.1%	6.7 min	0.0%
AS Alaska Airlines	18	6%	83.3%	-9.9 min	5.6%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
STS–SNA	Santa Rosa to Santa Ana	62	79.0%	7.3 min	0.0%
STS–SAN	Santa Rosa to San Diego	54	68.5%	12.4 min	0.0%
STS–LAX	Santa Rosa to Los Angeles	42	81.0%	3.5 min	0.0%
STS–PDX	Santa Rosa to Portland	42	73.8%	9.7 min	0.0%
STS–PHX	Santa Rosa to Phoenix	31	83.9%	-2.2 min	0.0%
STS–SEA	Santa Rosa to Seattle	31	90.3%	-9.8 min	3.2%
STS–BUR	Santa Rosa to Burbank	18	66.7%	15.9 min	0.0%

By scheduled departure hour

100

On-time share:under 62%6270768288% and over

Share of departures that left less than 15 minutes late, by scheduled hour (local time), March 2024.

Delay causes

BTS cause category	Share of delay minutes	National, Mar 2024	Minutes
Air carrier	39.6%	32.1%	1,017
Late-arriving aircraft	31.3%	42.1%	802
National Aviation System	22.3%	21.4%	572
Extreme weather	5.6%	4.2%	144
Security	1.2%	0.2%	31

2,566 delay minutes on 62 flights that arrived 15 or more minutes late and carried a cause report. Carriers assign the categories; see what each category means.

Questions and answers

How many flights left STS on time in March 2024?

85.7% of 280 scheduled domestic departures left less than 15 minutes late, and 77.5% reached their destination on time. The national figures that month were 78.5% and 78.3%.

How does that compare with a year earlier?

March 2023 is outside the 36 months on file, or the airport had too few reported flights that month.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for March 2024; public domain. Domestic scheduled flights by reporting carriers, totals and averages only. The site's data runs through July 2026. Full record for STS · methodology · corrections.